ghalliday/HPCC-Platform — comment on commit c5e3fc22f26dafe654f7bbafacaa9f415e4f1ed1
File: roxie/roxiemem/roxiemem.cpp line 579
By richardkchapman:

why not ```const atomic_t * curCount = (const atomic_t *) ptr - 1;```

or indeed ```ChunkHeader * header = (ChunkHeader *)ptr - 1;``` then use header->count?